I don't understand why mental clarity must lead to certain outcomes. What's wrong with seeking peace in order to find ways to market things better? Or seeking calm and finding inner strength to go and wipe out a troublesome group of people?

While those might seem abhorrent to us, a mind improving practice should work for any goal. It's not like exercising doesn't work to your advantage if you're evil.

To the point: if one is not interested in A or C, just B, is it still helpful?